Leopold brandeis



if M f I at 5am awe- @ffwa IMPROVED METHOD 0:- MAKING- conns r'on .MOULDING ARTICLES OFLEAJD 41115 OTHER METALS.

The Schedule referred to in these Letters Patent and making part of the same. .;H

To all whom it may camera: I

Be it known that I, LEQPOL'D B AnDnIs, of Brook lyn, county of Kings, and State of N ew'Yoz-k, have a new and improved Method (if-Making Cores for Plumbers Lead Traps, or for any curved castingof lead, tin, zinc, antimony, bismuth, and cadmium, or their respective and mutual alloys. V

The nature of my invention consists in'providing' a suitable mould, andin forming the core on this mould of paper, pasteboard,'muslin, silk, papier-mach, paperpulp, or any suitable textile materiah or of India rubber, oil-cloth, felt, clotlnand other materials of wool, linen, cotton, or silk, and Wire.

To'enable others skilled in the art to make and use my invention, I will proceed to describe the operations.

I form my core for plumbers traps, or for any other curved casting of lead, tin, zinc, antimony, bismuth,

and cadmium, or their respective and mutualalloys, of paper or paper-pulp, by compressing the material used .over the mould by hand or suitable machinery, and

fasten the edges together by glue or any other adhesive substance.

I follow the same process with pasteboard, muslin, silk, linen, or any textile material.

For oil-cloth orIndia-rubber cloth, I use a'solution of India rubber, shellac, or naphtha, or the cements used for such purposes.

If the material used is not stiff or stout enough, I- strengthen it bya coating of flour or starch in water, or by mucilage, glue, gum-arabic, 860.; and if it should be desirable to. have it; fire-proof, I dip the material into a solution of alum, chloride'of zinc, or Water-glass, prepared with either soda or potash. As is natural, the material has to be thoroughly dried.- The outside mould may bein halves; and pins, of the same material as the articles intended to be cast, may be used to support the corein-its position.

What I claim as my invention, and desire to secure by. Letters Patent, is-

The production and use of cores (fire-proof or not) made of wire, paper, pasteboar'd, paper-pulp, muslin, felt, and linen cloth, or of any textilefabric, or of oilc1oth,silk, or India rubber, for-casting of plumbers "traps, or otherpurved articles, madepf lead, tin, zinc,

bismuth, antimony, cadmium, and their respective and mutual. alloys, and the application of pape'ror other materials, as described, for forming cores to be used in making castings from any metal or alloy.

noroLD BRAnpEIs. "Witnesses:

GEORGE HOHNER, FRIEDRICH K mzn. 

